however,
this causes thermal degradation of some oil compounds. In this study patchouli essential oilwas extracted
with supercritical carbon dioxide (scCO2) under different conditions of pressure (8.5 and 14MPa) and
temperature (40 and 50 ◦C) and also by steam distillation to compare the extraction methods. It was
demonstrated that the extraction with supercritical carbon dioxide provided a higher yield and a better
quality of patchouli essential oil.